Hmmmm , I think that's all I want to do
before Christmas ( Xmas to some )

To test receivers one needs a variable voltage power converter ( power
supply ) . In is 12v and out is pretty much anything I want . So
to test receivers / servos we probably want 5 to 6 volts generally , but
I am looking for low voltage performance ( 1s ) or 4.2v and down . Some
receivers claim 3.5v on the low end and I am going to test this . ( How
low can we go ? ) Anyhow I have the power supply set up , so that's out
of the way .